Type-writing machine.



F. A. RQBINSUN. i TYPE WRITING MACHINE.

APPLICATLQII FILED AUG-6. |915. Igla l Patented Jan. 23,1917.

3 SHEETS-SHEET 1.

@I ,l I MI. il I F. A. ROBINSON.

' TYPE wRmNG MACHINE.

APPLICATION vFlLED AUG-6.1915.

Patented Jim.v 23,` ,1917.1

3 SHEETS-SHEET :4.V

wlTN Essfas:

INVENTOR:

F. A. ROBINSON.

TYPE WRITING MACHINE. APPLICATION. meu 11116.15, 1915.

Patented Jan. 23,1917.

3 SHEETS-SHEET 3.

.I NVENTORl wITN assis writing I[DW-FED STATES PA FRANK A. ROBINSON, or BROOKLYN,

TYPE-WRITING MACHINE.

Application filed August 6, 1915. Serial No. 43,908.V

To all whom t may concern:

Be it known that LFRANK A. ROBINSON, a citizen of the United States, residing in Brooklyn borough, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the fol-l lowlng is a specification.

`The present invention relates to paperfeeding and associated mechanism for typewriting machines, especially adapted for on superposed webs and paper of many plies interleaved with carbon sheets.

The invention is particularly designed for use in connection with a machinek such as shown in United States. Letters Patent 1,132,055, to Wernery & Smith, dated March ,l 16, 1915; although in certain of its features f it is applicable to other machines.

machine of the patent referred to is adapted to be used for writing on continuous webs,

lio

The

each composed of a series of printed forms, andl usually folded to have many plies', so that,by the use of interleaved carbon sheets, many copies may be simultaneously made. As the form sections are written they are detached from the web and the web advanced for the writing of the neXt succeeding section thereof; the carbon sheets being at such'times drawn back along the plies of the web from the written to the next unwritten section thereof. To permit of free movement of the web for detachment of a section thereof and for repositioning the web and carbon sheets, the platen, after each section of the web is written, is shifted bodily to unwrap the web therefrom and to relieve the pressure of the feed rollers thereon. It isapparent that if the rollers which effect the primary feed of the web are rollers which feed by merely pressing nie web against the platen, then, if the weby is ofappreciablethickness, there is liable, in some cases, to be slipping of the roller with respect to the platen, duc to the uncertain grip of one or the other, particularly if the web is folded longitudinally. Furthermore, in a `web of many plies,l the different plies will have paths of travel of different diameters around the platen, and

.consequently there is liable to bein some cases a lagging or slipping, ora crimping of some of the plies of the web during the feed thereof. l

The principal object `of the presentin- NEW YORK, ASSIGNOR TO UNDJERWOD TYPE- WRIT'ER COMPANY, OF NEW YORK, N. Y., A CORPORATION 0?!" BELEK/VARIE.; l

Specication of Letters Patent.

'1n-geared connection with the platen, and

The shaft of' one off-thecfoll/Sis brought 11'@ Patented aan. as, isis'.

vention isto provide a .means for,` effecting I a positive primary feed of the web around t-he rotating platen, such `that all plies thereof are drawn to the printing line without slipping or creeping, and'particularly without undue crimping or distortion of theweb. It is an object ofthe invention to adapt such feeding means to a machine in which the platen. is shifted' after the writingof each sectionv of the web to release the web for detaching a section thereof, and for repositioning it for further writing.

In its preferred embodiment, for the purposes stated, the feeding'means consists of a pair of opposed rollers held resiliently to one another and positivelydriven from the line-space mechanism of. the typewriting machine at the rotation4 of the platen. These rollers are geared together, and may be spaced away from the platenA to permit free passage Of the web thereto. They are all the gears are so proportioned with respect to each other, andto the Vdiameters of the feed rolls andplaten, that the rolls and platen have substantially the same peripheral speed when feeding; thus avoiding trouble from crimping'of the web at the rolls, or between the rolls Vand the platen.

In a machine ofthe general character of that of the lVe'rnery: & Smith kPatent 1,132,055, above referred to,'the feed rollers may be mounted on the frame which swings the platen between printing and Apaperreleasing positions. The gearwhich in that machine keeps the linee'space; mechanisml in` permanent driving connection with the platen may serve as the gear vfor driving one of the opposing feedrollsyand theshaft of that roll may bethe axle yaround which zthe platen swings. `In this way'one kgear is made to accomplish a double purpose,-andA by means thereof the structure is much simplified. At the samevtime this use ofthe gear in question assures proper feed of the 100 rolls with respect tothe platen.'

A feature of the'inve'ntionis the means by which the rollsareAv separated automatically to release the web, when the platen is shifted to permit the' web tobe unwrapped 105 therefrom. This roll-'separating-means, in. its preferred form, comprises apairfof cams on that part of theplaten frame'which does not swing in 'the paper-releasing operation.

against these cams by the swing of ,the

frame which carries the rolls and the platen,

. and the cams force it, along elongated bearthe parts shown Iin to that of ings in the swinging frame, to separate the rolls against the actionl of the resilient means which tend to .hold the rolls together, The rolls are finally brought to a position in which the space thus opened between -them permits free movement of the web in a straight line from the websupporting table. i

. Another feature of the invention is a means for separating the feedrollers to permit of adjustment ofthe web when it is not desired to swing the platen to release the carbon sheets and detach a web section. This means may consist of a leyer or bail pivoted to the non-swinging platen frame, and adapted to be rocked against the shaft of that roll which, as just stated, has moveadvantages will ap- Fig. 1 being removed standing ,of the parts shown. Fig. 3 is a top plan-view of the feed rollers in their normal or printing position with respect to theplaten and line-space mechanism. Fig.

e is a View in left-hand side elevation,'of

the mechanism shown in Fig. 3; certain additional features being shown in coperative relation thereto, and the part-s being in printing position. Fig. 5 is a view similar Fig. 4, except that the parts are in paper-releasing position. Fig. 6 is a view in left-hand side elevation, showing the platen, feed rolls, carbon sheet holder, and other web-guiding elements, with the web in place thereon, and all parts being in the position assumed when -the web is to be positioned prior to enlarged detail view in left side elevation,

` showing,particularly the gearing between the platen `and the feed rolls and certain other'related parts. Fig. 8 is a view similar to that of Fig. 6, except that the parts are in printing position. Fig. 9 is a view in side elevation, of the right-hand end plate of the swinging platen frame, showing the bearings shafts therein, feed rolls ay of the weliix and the means by which the be separated for adjustment Referring to thev kiraii/vinge, the platen 10"' is'fiXed on the shaft 11v which is journaled in a frame mounted to swing on a shaft/"12,

having bearings in the end, plates. 131 of the wheel 25 being cut. Fig. 7 is an vable, and the platen shaft of the. platen and 'feed-roll' gears 35 and .36.

missie usual platen frame. vThis `pivoted frame consists of end plates or arms 14C and 15 loose on the shaft 12. The platen has its. A bearings in the plates 14 and 15. The frame is normally heldin the Fig. 1 position. It?-o is swung from its normal Q1' printing posi# tion to its web-releasingposition, as shown in the patent to wernery a smith, 1,132,055( by means of an arm or handle 16 which is riveted at 17a to the left-hand plate 14 of 75 the swinging frame. For locking the'pl. ten frame in printing position, the handle 16 carries a pin 16a adapted to be engaged by a hook 17 pivotally mounted on a bracket j 18 on the end Vplate 13 of the frame to 80 which the swinging frame is attached'. A spring 19 engages theI hook andthe bracket to hold the hook in platen-locking position and to return it to such position when free to do so, at 20 to permit the pin ,16a to lcam it backward until the pin can pass under lthe' nose, thereby making the locking operation auto,

- matic when the platen frameis svimngdown,A

A tooth 21 on the hook 90 may serve to determine the return throw and normal position of the platen, in conjunction with a pin or stop 23 on the righthand end of carriage-piece 13 at the `front thereof. When the right-hand plate 15 95 strikes the pin 23, the platenframe is dei-v 'nitely arrested. f'

To effect the linelspace feed or rotation of the platen, provided the usual to normal position.

there are hand. wheel 24 and ratchet wheel 25, both 100 fast to a short sha-ft 26, mounted to rotate in the left-hand end piece 13 of the carriage. In printing position, the shaftv 26 is lconcentric with theplaten shaft 11.' As is common in Underwood typewriting machines, the ratchet is actuated by a pawl 27 'on a slide 28, engaged by one arm 29 of a linespace lever pivoted at 3,0 to the carriage frame and having anotherarm 31 which carries the linger-piece 32. A. spring 33 re- 110 turns the slide and pawl to normal position. A spring deteht 34 engages the ratchelil to hold the platen against dis placement. Thev driving connection 'be .I tween the shaft 26, whose axis is not change- 11 which swings from one-to. another position, consists of gears 35, 36 and 37. The'gear 35 is fast to the shaft 26; the gear 36 isl fast to the platen shaft, and is of the'same size and 120 number of teeth as gear 35; andthe gear 37 is fast on the axle 1 2 around which the platen frame'swings, and has a face of sufficient width simultaneously to mesh 'with The driving connection between the, shaft 26 and 'platen is thus maintained in allpositions of/the platen.

In Patent 1,132,055, to VVer'nery Smith, above referred to, it is shown that in the operationof removlng a printed length 130,

vThe nose of the hook is shaped 85 line from back to front of the from the web, and in re-adjusting the web for printing the next length, the platen -is swung from printing position to a position away from the feed rolls, so that the web no longer wraps around the platen, but may be moved freely in substantially a. straight machine. When the platen is in this positiomthe carbon sheets between the plies or folds of the section ofthe web to be removed, are drawn back into the length or section of web next to be printed; and, after removal of a length of the web, and re-positioning of the web, the platen is returned to its normal position against the feed rolls.v In the present case, the operation is the same, except that, instead of the feed rolls heretofore used, other feed rolls, presently to be described, are here employed.

The web is preferably in a single piece, fan-folded longitudinally, to provide for several copies when carbon sheets are interleaved with the folds. It may also be in a crosswise fan-folded condition before being fed 'into the machine to permit of compactness and convenience in handling, or it may be fed from a roll. It is fed into the machine over a bar 38 at therear of a-table 39,

having side rails 40 to which the bar 38 is secured. These rails are connected at the front of the table by al bar or tie-rod 41 supported by arms 42 secured to the platen carriage, so that the table has letter-feed movement with the platen. The table frame is further braced by cross-bars 43 and 44, and on the cross-bar 43 is a. roller 45 which rides on a rail 46 carried by a framework 47, secured to or forming part of the main frame of the machine, and which supports the taloleV 39 at the rear thereof.

The web is led onto the table through a set of fingers 48, each of' which (as shown in Fig. 6), protrudes into the web to guide and separate two adjacent plies thereof. The fingers are stepped up one above the other, and those on one side of the table are staggered with -respect to those on the other side of the table to be in position to receive the oppositely-folded plies of the web. The fingers 48 are secured, as by screws 49, to the table. From the guide fingers 48 the web is led to the carbon sheet holder 50. It has been stated ,that the web is folded longitudinally s o that several copies may, be made at a time by the use of carbon sheets interleaved with the plies of the web. These carbon sheets,l as abo-ve stated, are thrown backfrom the written portions of the web onto the length thereof next to be written, at the time the'web is released and before it is cut. For permittingforward line-space feed of the carbon sheets with the Web, and for withdrawing the carbon sheets from the written to the next unwritten section of the web, the holder is in thek form of ua carriage are attached. This carriage (see Figsfl and 6) 'consists of a rectangular plategl having depending end flanges 52 on `each of which are mounted two rollers 53 adapt ed to ride on inturned lateral flanges 54 oni -the side rails 40 of the table. The line-space feed -of the web around theY platen with the carbon sheets clamped by the feed rolls he` `tween .the folds thereof, causes theholder 50 to be drawn forward on the rails-40 during th-e printing operation. For drawing back the holder to re-'position the carbon sheets on the web when a printed section of the web is removed, there is attached to the holder a cord 55 which passes over a pulley 56 secured to the rear bar 38, and is brought forward to a spring drum 56a (see Fig, (3), which is journaled on a stub shaft bcarried by an arm 56c attached to the table at the front thereof. The drum yields to permit the line-space feed of the carbon sheets,

vbut when the platen is thrown up, asV indicated in Fig. 6, and the pressure ofthe feed rolls thereon is thus 1'elieved,-tliev tension of the drum ,on the cord 55 causes the holder 50 to be thrown back until stopped at the rea-r of the table, andthe carbonsheets `to be slid back along the folds of the web to position for writing thev next web section. This means for throwing the holder is not new with the present invention, 'nor ,is the holder itself. For securing the rear ends of the lcarbon sheets to the holder, the latten carries clips or fingers 57b onl stepped r'plates 57 on the ends of the holder. Alternate'. clips are secured to opposite ends of the holder, and are progressively stepped up (as in the case of the fingers 48 at the rearl of the table), to assure proper spacing of the web folds and movement of the carbon sheets between the same. l'

From the carbon holder 50 the web is `led over a tie-rod 57a on the carriage'frame (see Fig. 8), down raround the platen, and'up .shelf may swingwith the platen. The shelf carries the usual gage bar (34, with thegage piece adjustable therealong. y,forl measuring thelengths to be cut from the web. A

-to which the' rear ends of the carbon sheetsl 'between t-he feed rolls 58 and 59, past the set screw. o r thumb screw, G6 passes through theholding portion 6T of the gage piece and into contact with the bar` 64 toiprovide for adjustable attachment of the gage piece to the bar. In measuring the lengths tobe cut from the web` the leading edge of the web. when the web is released by the swing of the platen (see Fig. is drawn fol-ward to the gage piece (35. The carbon sheets then being drawn back out of the advanced seclso i tion of the web, the latter is cut off by being the Web against the platen; and such rolls 'reaches the printing line,

are usually, although notpalivays, located be# low the platen. The purpose vin so locating .the rolls in the ordinary typeiv'riting machines'has 4been to assure a close Wrapping of the paper around the platen ybefore it so that, at the J printing line, it must bear 'firmly on the platen Without possibility machine suchas the present, however,` the i web back ofthe printing line is held tautly to the lplaten by the action of the spring drum onthe carbon-sheet holder, and by reason of the turn of the Web over the rod 41; thelength and Weight of the Web and the friction exerted .on it by the guides .over

A' andA through whiclit passes. Pressure rolls back of,the printi g -line are therefore not in connection With Webs As has heretofore been ordinarily required as here employed.

indicated, thel Web. used in the present machine may have many folds With interleaved carbon sheets; land consequently a primaryv feed of the same by mere pressure against the platenis likely to result in a crimping, lor lag or slip in the feed of the outer plies, because of the difference in diameter of the paths of movement of the several plies around the platen. It is for this reason that the feed rolls of the present invention have been adopted.V These rolls 58 and '59 (see Fig. 8) bear, one on each side, on thevveb, thereby assuringI uniform feed of all the plies of the web. In fact, the Web is shown as having a turn, first to the right and then to 7 the left,.in its passage by the rolls 58 and 59,

" in a direct so that, With both rolls set near the platen,- all the plies of the Web l the paper shelf 61. The rolls 58 and 59 are shown as of the same diameter so that, turning at the same speed, they give all the plies of the web a uniform feed. Insteadof a single'roll 58,l there are preferably several rolls 58, all fixed to the shaft 12 on which the platen frame is loosely mouilited. Similarly,

-are the same; this,

of play. In a -are `held. The

plates 14 and 15. Shaft that is to say, for printing,

line from the `printing point to v there are several ro-lls 59, all fixed to a shaft 71, which has bearing in the'side plates 14 and 15 of the swinging platen frame. The rolls 58 are drivenfroin the platen on linespace movement of the latter, and the rolls 59 are driven from the shaft of the rolls 58. This driveof the rolls 58 is effected by means of the gears 3G and 37 which, as will be "recalled, also serve to effect the'drive of the platen from the gear 35 of the line-space mechanism. The gears 36 and 37 are so proportioned as to pitch-diameter that, With the rolls 58 spaced from the platen, the pef ripheral. speeds of the platen and rolls 58 as before stated, in order that there may be nol rolls 58 are to be held away from the platen, although driven at the same peripheral speed as the latter, the pitel1-dia1neter 'of the gear 36 is greater than that of the platen, according to the distance at which the rolls 58 ,drive of ythe rolls 59 is effected by means of a pinion 72,Y fast to the shaft 12,

, which meshes with a pinion 7 3 of like pitchdiameter and a number of teeth, fast to the shaft-71. The shaft 12 is held against lon' gitudinal displacement by\\collars 12a (see Fig. 3) secured t0 the shaft and abutting the 71 is similarly held against longitudinal displacement by collars 71a, also abutting the plates 14 and v15.

VVhe-n the platen .frame `is swung from Fig. 4 position to Fig. 5 position, to release the web, the rolls 59 are separated from the rolls 58. En order that this separation may take place Without disengagement and independent rotation of the gears 72 and 73, and that these gears may at all times moveback to driving engagement Without clashing or impedance, the'teeth of these gears (see Fig. 7) are ofv such length that, even when the rolls 58 and 59 are separated (see Fig. 5), the gears remain intermeshed. To permit movement of the rolls 59 awayfrom the rolls 58, the shaft 71, Which carries the rolls 59,has bearing in slots 74 in the plates 14 and 15 of the swinging frame.` Normally, the shaft 71 is resiliently held in Fig. 7 position in the slots 74 by means of coil springs 7 5 (see Fig. 8),

differential feed or .crimping of parts of the web. Since the iet onenear each end of the shaft 7-1, and which p are looped over the. shaft 71 at one of their ends and over-the shaft 12, at their other ends. For separating the shafts 1 and 12 against the action of the springs 75, When the platen is swung are two cams 76, one fast to each of the end pieces 13' of the frame .in which the swinging frame is'mounted, (see Fig. 3), just outside of .the plates 14 and 15, of the swinging platen frame. The shaft 71 (see. Fig. 3) extends outvvardfbeyond the* cams 7 6, so that, in swinging the frame from Fig. 4 to Fie". 5

toy Fig.' 5 position, there,

' as a stop to limit this movement.

cams 76, and thereafter, on further moti- Inent of the swinging frame, the shaft 7l 1s forced to travel along the cams until the rolls are separated, as shown in Fig. 6, ywith the shaft 71 at the other ends of the slots 74 in which it has bearings. Qn return of the platen frame to printing position, the springs 75 return the shaft 71 with the rolls 59, to their Fig. 7 position. '1

It may be desired to adjust the web without releasing the carbon sheets or going through the operation of throwing the platen frame. For this purpose, provision is made for movement of the rolls 59 from the rolls 58, while the other parts remain in Fig. 7 position. This movement is accomplishedxby means of a bail comprising a cross bar 78 on arms 79; the arms 79 being pivoted, one at each side of the machine, as at 80, to the adjacent plates 14 and 15 of the platen frame, and being adapted to be swung backwardly against the rolly shaft 71 to move the latter, against the action of springs 75, to Fig. 9 position. A handle 81 attached to the bail may be used to throw the same; and the cutter shaft 82 may serve On release of the handle 481, the springs 7 5 return the rolls 59 to normal Fig. 8 position.

The cutter blade 60 is mounted on the rock-shaft 82, and is held in normal (Fig. l) position by means of a spring 83 secured to the shaft 82 and to the plate 14. .A linger-piece 84 attached to the shaft -82 serves as a means for throwing the cutter to the web when a section of the latter is to be removed. Upon release of the finger-piece, tue spring88 returns the cutter to normal position. Except for the position 1n which the cutterl is mounted, because 0f the feed rolls 58 and 59, it is not different lfrom those heretofore in use.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: j

1. In a typewriting machine, the combination with a rotary platen, of ak pair of feed rolls between which a Work-piece may be grasped to be thereby drawn over the platen,

and means for effecting a positive drive of said rolls and the platen at the same peripheral speed to cause the same to act when in motion as the sole means for feeding the work-piece. n

2. In a typewriting machine, thecombmation with a rotaryplaten, ofa pair of feed rolls between which a work-piece may be grasped to be thereby drawn over the platen, intermeshing gears, one fast to each of said rolls, for e`ecting a .positive drive of said rolls at the same peripheral speed to Cause the same to act as the primary means for feeding the work-piece, and a gear fast to l rolls acting the platen and intermeshinf with one'of said roll gears for effecting a -dri'vefof the roll gears and the platenin unison said wheny in motion'as" thei'sole eans for feeding the wrkpieee r1:- 9 a a: In a typewritingvlpaehineithe combination with 'a platen, of a pairl 'offeedrolls 'between which a work-piece `)hay be grasped after it leaves the printing lirimto be? thereby drawnover the platen', means foreffe'cting a posltive drive of'said-;-rolls and said platen at the same peripheral speed `to cause the same to act -when in motion" as the sole means for feeding thev work-piece, and means for holding the --work-pieceto the platen behind the printing line.l

4. In a typewriting machine, the combination with a. platen, of a pair Aof feed rolls between which a work-piece may be grasped to be thereby drawn over the platen, means for effecting a. positive drive of said rolls and said platen at the same peripheral speed to cause the same to act when inmotion as the sole means for feeding the 'work-piece, and means for exerting a draw on the'workpiece behind the printing linevto hold the same snugly against the platen.

5. In a typewriting machine, the combination with a platen, of a pair of feed rolls between which a worl -piece'maybe grasped to be. thereby drawn over the platen, means and said platen at the Asame peripheral speed to cause the .same to act when in`mo' tion as the sole means for feeding the'workpiece, and a bar over which the work-piece is turned behind the printing line to cause the work-piece to be `held snugly to the platen as it approaches the printingfline.

6. In a typewriting machine, the combination with a platen, of a pair vof feed rolls between which a work-piece maybe grasped to be thereby drawn over the platen, means for effecting a positive drive of said rolls and said platen to cause 'the Same to act when in motion as the sole means for feeding the work-piece, and resilientmeans for drawing on the work-piece behindtheprinting line to cause the work-piece ktobe held snugly to the platen as it appioacliesthe printing line. l 7. In a typewriting machine, the combination with a platen, of a pair of feed rolls means for feeding the work-piece. y

8. 'In a typewriting ma' hiy e, `thefc'onbination with a platen, fof a pair oftfeedfrolls between which a work-piece may vbei''grasped to be thereby drawn overthe` platen, means for effecting a positive driveof said -rolls for effecting a resilient pressure of one oI said rolls on the otheigflmeans for effecting a positive drive of said rolls and said platen at the same peripheral speed to cause the same toact when fin motion as the sole means for feeding the work-piece, and means for relieving the pressure of one of said rolls on the otherstorelease the work-piece.

9. In a typewriting machine, the combil nation with a rotary platen, of a pair o f feed rolls between which 'a work-piece may be grasped to be thereby drawn over theplaten, one of saidrolls being-shiftable to and from v'the other to engage or release the worksoy rolls between which piece, and intermeshing gears fast to said rolls for effecting a drive of the same in unison, the teeth of said gears being of sufii'- cient lengthA to maintain the same in mesh when the rolls are shifted apart.

l0, Inatypewriting machine, the 'combination with a rotary platen, of a pair'of feed rolls between which a work-piece may be grasped to be thereby drawn over the platen,

one of said rolls having an elongated bear? ing over which it may be shifted to and from the other roll, to engage or release the work-piece, a spring tending to hold the rolls together, and means for shifting said shiftable roll on its elongated bearing.

l1. In a typewriting machine, the combination with a rotary pla'ten, of apair of feed rolls between which a work-piece may begrasped to be thereby drawn over the platen, one of said `rolls having4 an elongated bearing yover which it maybe shifted-to and from the other roll, to engage or release the workpiece, afspring tending to hold the lrolls together, means for @shifting said shiftable roll 'A on its elongated bearing, and intermeshing gears, one fast to-each of said rolls for driving the same in unison, the teethl of said gears the gears in mesh when the rolls are shifted apart.

nation with a rotaryplaten, of a pair ofv feed v(a work-piece may be grasped to be thereby drawn over the-platen, one of said rolls being shiftable to and from the other to engage or 'release the .work-- piece, intermeshing gears fast to said rolls for eecting a d rive of the same in unison,

the teeth of said gears being of sufficient length to maintain the same in' mesh when the rolls are shiftedapart, and a gear on the. platen inpermanent mesh with one of said roll gears for drivin the rolls with the.-

.g praten.

13. In a typewriting machine, the combination with anrotary platen,,of a pair of rolls 'een whichA aweb is grasped to be there 'drawn' around the platen, means. for leading the `web to'such part of the platen as to -cause it normally to wrap ,the platen as it is'drawn around'the same, means' for being of suicient length to maintain In a typewriting machine, the 'combi-L.

swinging the platen to a position where the web is unwrapped and released therefrom, and means for swinging the rolls with the platen to provide a straight passage fqr the web through the machine.

let. In a typewriting machi e, the combination .with a rotary platen, drawing a web to and around the platen, means for leading the web to'such ,part of the platen as to cause it to wrap ,the platen as it, is drawn around the same, means for f means for shifting the platen to unwrap the web there- 'l from, said webdrawing means comprising a pair of rolls between which the web 1s grasped, and means for positively driving both of said rolls and the platen at the same peripheral speed.

-15. In a typewriting machine, the vcombi-l nation with a rotary platen, of means f or drawing a web to and around the platen, means for leading the web to such part of the platen as to cause it 'to wrap the :platen as it is drawn around the same, means for shifting the platen to unwrap the web therefrom, said -web-drawing means comprising a pair ofl rol-ls, gearing connecting said rolls with each other and with the platen, and

means for positively driving said gearing.

. v16. In a'typewriting machine, the combination with a rotary platen, of means for drawing a web to and around the platen,

means for leading the web to vsuch part of the platen as to cause it to wrap the platen as it is drawn varound-th'esame, means for shifting the platen to 'unwrapthe web there from, said web-drawing means comprising a pair of rolls. between which the weby is grasped., and means for positively driving 4 both of said rolls and the platen at thesame periplieral'speed, said rolls being 4out of engagement with the platen As o as to leave an unrestricted passage-for'- the web 4between` said platen and said rolls.

1 7. In a typewritingfmachinmthe' combination with a rotary platen, fof means for 18. In a typewrlting machine, the combination with a rotary platen, `of.a pair of' rolls between which a web is 'grasped to be thereby. drawn to and around the platen. means for leading the web to such part of the platen as ,to cause it .to wrap the platen asgitgis drawn around the same, means for swinging the platen around the axis of one i nation with a rotary platen, of a pair of rolls between which a web is grasped to be thereby drawn to and around the platen, means for leading the web to such part of the platen as to cause it to wrap the platen as it is drawn around the same, means for swinging the platen around the axis of one of said rolls to unwrap the web from the platen, a gear on the roll around whose axis the platen swings, and a gear on the platen in mesh with said roll gear for effecting a drive ofthe rollsin unison with the platen.

20. In a typewriting machine, the combi! nation with a rotary platen, of a pair of rolls between which a web is grasped to be thereby drawn to and around the platen, means for leading the web to such part of the platen as to cause it to wrap the platen as it is drawn around'the same, means for swinging the platen around the axis of one of said rolls to unwrap the web from the platen, a gear on the roll around whose axis the platen swings, and a gear on the platen in mesh with said roll gear lfor eieeting a drive of the rolls in unison with the platen,

said intermeshing gears being proportioned to drive the rolls at the same peripheral speed as the platen with'free passage for the web between the rolls and the pla* en.

21. In a typewriting machine, the combif nation with a rotary platen, of apa-ii of rolls between which a web is grasped to be thereby drawn to and around the platen,

means for leading the web to such part of the platen as to cause it to wrap the platen as it is drawn ,aITQund the same, means for swinging the platen around the axis of one of said rolls to unwrap the web from the platen, means for driving said rolls, and .means for separating saidrolls when the platen is swung on said axis. 4

22. In a typewriting machine, the combination with arotary platen, of a pair of rolls between which a web `is grasped to be .thereby drawn to and around the platen, xmeans for leading the web to such part of the platen as to cause it to` wrap the platen as it is drawn around the same, means for swinging the platen around the axis of one ofsaid rolls to unwrapV the web from the platen, means for driving said rolls, land a cam against which one Vof said rolls is moved Y to separate it from the other roll when the .p platen is swung around said axis.

23. In a typewritingv machine, the combi- -nation with a rotary platen, of a. pairjot rolls between which a` web. is grasped to be thereby drawn to; and around the platen,

means `for leading. the web to vsuch part ot the platen as to cause it to wrap the platen u as itis drawn around the same, means for swingingpthe platen around the axis of one vunwrapped from the platen.

of said rolls to unwrap the web from the l platen, means for driving said rolls, a cam] against which one of said rolls'is moved to' separate it from the other roll when they platen is swung around said axis, and means for resiliently holding said rolls together and for bringing said rolls together when.`

the platen receives a reverse swing on said l axls.

-as to cause it to wrap the platen as it lis drawn around the samefli'neans for swing,-r

ing the platen around the axis of oneof said.`

rolls to unwrap the web from the platen,J

means for driving said rolls, and a camv for separating said rolls when the platen is swung around lts axis.

25. In a typewriting machine, the combination `with a rotary platen, of a ypair of rolls between which a web is grasped t'o be thereby drawn around the platen, means tordriv-v ing said rolls, means forY leading the web to such part of the platen as to cause. 'it Ato wrap the platen as it is drawny around vth same, a s'wlnging frame in which the plate and said rolls are mounted, and meansfft swinging said frame to cause thevweb tolle 26. In a typewriting machine, the combination with a rotary platen, of a pair olf rolls between which a. web is grasped to ybev thereby drawn around the platen, means for driving said 'rolls, means for leading the web to such part of the platen as to cause 't to wrap the platen as it is drawn around tliie same, a swinging frame in which theV platen separating the Vrolls when theframe is s swung.

27. In a typewriting` machine, the combination with a rotary platen, of a pair fof rolls between which a web'is grasped Ato be thereby drawn around the platen, means for driving said rolls, means for leading the web .tosuch part of the platenas to'cause it to wrap the platen 'as it is drawn'around the same, a swinging frame in which the platenl and said rolls are mounted, the axis of'zone."

of said rolls being shiftablelon said frame' to and from the axis of the other rolhnieans' for swinging the frame, and means acting, when the frame' is swung. to move said shiftable axis with the roll thereon aw'ayfifni the other roll.

28. In a. typewriting machine, 'the co'mbi nation with a rotary platen, of a pairfof rolls vbetween which a web -is grasped tofbe thereby drawn around the'platen, means for driving said rolls, means for `leadingfthe 'webv to such part of the platen as to cause platen and s aid rolls are-mounted, the axis of one of said rolls being shiftable on said frame to and'from the axis of the other roll.

means for swinging the iframe, and a fixed I cam' against vwhich said shiftable axis is drawn, when said frame is swung, to cause -said rolls then to be separated.

29. In a typewriting' machine, the combi- 'nation ywith a rotary platen, of a pair of l rolls between which a web is grasped to be thereby drawn around the platen, means Jtor driving said rolls, means for leading the part of the platen as to cause it to wrap thel platen as it is drawn around the same, a .swinging trame in which the platen and said rolls are mounted, the axis ot' one of said rolls being shiftable onsaid frame 'to and from thea-xis of the other roll, means fonswinging the frame, a fixed cam against which said shifta'ble axis is drawn, when said frame isfswunggto cause said rolls then holding said rolls normally of the frame.

"ro s-'between which a web is grasped tov be thereby drawn around the platen, means for driving said rolls, means tor leading the web to, such part of the platen as to cause itto trap'the platen as it is drawn around the same, a swinging frame in which the platen and` said rolls are mounted, the axis of one of said rolls' being shiftable on said y -rame to and from the axis of the other roll,

f slots in the end platesot means-for swinging the frame, and an abutment against which said shiftable axis is drawn, when said frame is swung, to cause said rolls 'then to be separated.

3l. In a typewriting machine, the combination with a rotary platen, of a pair of rolls between which aweb is grasped to be thereby drawn around the platen, means for driving said rolls,' means for leading the web to such part of the platen as to cause it to `wrap-the platen as it is drawn around the same, a swinging frame in which the platen and said rolls are mounted, the axis of one of said rolls projecting through and beyond said frame, means for swinging the frame, and ixed abutments in the path of the projecting ends of said axis to engage the latter and shift the same in said slots, thereby separating the rolls when the frame is swung.

32. In a typewriting machine, the combination with a rotary platen, of a pair of rolls between which a. web is grasped to be the platen, means for for leading the web to cause it to thereby drawn around driving s aid rolls, means to such part of theplaten as .be thereby' `wrap the platen as it is drawn around the it to wrap the platen as it is drawn around the same, a swinging frame in which' the saine, a swinging frame in which the platen and said rolls #are mounted, the axis of one ot said rolls beig shiitable on said frame 'to andv from the axis `oi"'tnjfS-other roll, means for swinging the frame, means acting, when the frame is swung, to move said shiftable axis with the roll thereon away from'the other roll, andineansfor'so shifting the rolls apart when the frame is not swung.

i '33. In a typewriting machine, the combination with a 'rotary platen, of' a pair of rolls between which a web is grasped to be thereby drawn around the platen, means for driving said. rolls, means for leadingv the web to such part of the platen yas to. cause it to wrap the platen as itis drawn around the same, Va swinging frame in which the pla-tenv and said rolls are mounted, the axis of olie;l

of said rolls being shiftable on said frame-.to

and from the axis 'of vthe other roll, means for swinging the frame, `'means acting, when the trame is swung,'to -move said shiftable axis with the roll thereon away from the other roll, and a lever pivoted to said frame for moving said shiftable axis with the roll thereon away from the other roll when said frame is not swung.

34. In a ltypewriting machine, the combination with a rotary platen, of means for drawing a web to and around the platen, means for leading the web to such part of the platen as to cause it to wrap the platen as it is drawn around the saine, means for shifting the platen to unwrapy the .l web therefrom, said web-drawing means comprising a pair of rolls betweenwwhich the web is grasped, means for positively driv- 35. In a typewriting machine, the combination with a rotary platen, of means for drawing a web' t0 and around the platen,

means orleading theweb to such part ofthe platen as to cause it to wrap the platen as it is drawn around the same,l means for shifting the platen tounwrap the web therefrom, said web-drawing means comprising a pair of rolls between which the web is grasped, means for positively driving said rolls, and means for automatically separating said rolls vwhen the/'platen is shifted.

36. In a typewriting nation with .a rotary platen, of a pair of rolls between' which. a -web is grasped to drawn around the platen, means for leading the web to such partof-the platen as to cause it normally to wrap the platen as it is drawn around the saine, means for shifting the platen to unwrap space mechanism for driving both 'of said rolls and the platen at the sameperipheral speed when ythe latteris in normal-position.

and. releasevthe web therefrom.and 'line'- 37..In 'a typewriting machine, the combination'with a rotary platen, ofa pair of rolls between which a web is grasped to be thereby drawn around the platen, means for `leading the web to such part of the platen non-shiftable witlrthe platen in the webreleasing operation, and gearing from the line-space mechanism to the .platen and rolls.

3S. In a typewriting machine, the combination with a rotary platen,v of a pair of rolls between which a web is grasped to be thereby drawn around 'the platen, means for leading the web to such part of the platen as t'o cause it normally to wrap the platen as it is drawn around the same, means for" swinging the platen to 'unwrap and release the web, line-space mechanism non-shiftable with the platen in the webreleasing operation, a gear fast to the platen and concentric therewith, a gear forming Y part of the line-space mechanism, said gears belng concentric when the platen 1s 1n normal position, and a third gear fast to' the.

shaft of `one of said rolls, said third gear acting as an intermediary between saidother gears and as a means for driving said rolls from thellne-space meehanlmm 39. In a typewriting machine, thecombination with a -rotary platen, of a pair of rolls between which a web is grasped to be.

thereby drawn around the platen, means for .leading the web to such part ofthe platenas to cause it normally to wrap 4the platen as it is drawn around the same,

means for swinging the platen to unwrap and -release the web, line-'space mechanism non-shiftable with the1 platen in the web.- releasing operation, a gear fast to the platen and' concentric'therewith. a gear forming part of the line-space mechanism, said gears being concentric when the platen is in 4normal position, and a thirdv gear fast't'o` the shaft of one of said rolls, said third gear intermeshing with both'of said other gears,

and the shaft in which it is mounted being the axis around which the platen is swung ,between printing and web-releasing posions.

40. In 'a machine, the combination with a rotary platen, of a pair of rolls between which a web is grasped to be thereby drawn around the platen, means for leading the web to such part of the platen asto cause it normally to wrap the platen -two rolls in unison.

"as it is drawn around the,.same, means forv swinging the platen around-.the ams of onel of said rollsto unwrap and release the web, line-space mechanism non-shiftable with the platen in Ithe ,web-'releasing operation,-a

gear fast to -the'platen and. concentric there with, a gear forming part of the line-space.; mechanism, 'saidf -gears belng concentrlc when the platen isin normalv'position, a

third gear fast to the shaft -ofthe roll whose axis, .serves as Athe axis .about whichthe platen is swung, said third gear intermeshing with both of said other gears-and intermeshing gears in the vshaftsof the two rolls for effecting 41. In a typewriting' machine, the coma positive drive of the bination with a rotary platen, of a pair of rolls between which a web is 'grasped to be the axis of one of said rolls to un'wrapand release the web, line-space mechanism non-shiftable with the platen in the webreleasing operation, a gear fast to the platen beingconcentric when the platen is in-nor 1 mal position, a'third gear'` fast to the shaft ofthe roll whose axis serves as the axis about which the platen is swung, said third gear intermeshing with both of said other gears, inte'meshing-gears in the shafts of ,the two rolls for effecting-a positive drive of the two rolls in unison, and means for separating the rolls, without unmeshing the intermeshedgears thereof, when the plateny is swung to release the web. v

42. In a typewritjng machine, the com-v binati/on with a retaryplaten, of a pair of rolls between which a web is grasped to be thereby drawn around'the platen, means for vleading the web to such part of the platen asto'cause it normally to wrap the land concentric therewith, a gear Aforming -part of the line-space mechanism, said gears platen as vit is drawn -around the same', means vfor shifting the platen tounwrap and release the web therefrom, line-space mechanism, a gear' driven by said mechanism on the shaft of one of said rolls, and a gear on the platen driven from said roll gear.Y y

Y FRANK A. ROBINSON.

Witnesses:

' EDITH B. Linear,

ARTHUR A. J oHNsoN. 

